Tripper

Season 3, Episode 17 - An Academic Crime and a More Romantic Taco Bell Airs March 5, 2020 at 8:00/7:00c on CBS Dr. Sturgis is furious when Sheldon accuses him of plagiarism. Also, Mary sets out to find a “girl trophy” for Missy’s end-of-season baseball ceremony, and Georgie has an awkward run-in with Veronica (Isabel May) while on a date with his new girlfriend, Jana (Ava Allan). Stand-up comedian Louie Anderson guest stars as Ralph, a Trophy Store employee.

In Season 10, Episode 2 "The Military Miniaturization", Bernadette tries to keep her pregnancy hidden from people at work for fear she will be treated differently. There's some discussion about how she has always been treated differently at work.

Wallace Shawn stars in the Disney Channel Original Movie "Timmy Failure: Mistakes Were Made", now streaming on Disney+.

Season 3, Episode 16 - Pasadena Airs February 20, 2020 at 8:00/7:00c on CBS Sheldon visits CalTech for the very first time. Also, Georgie is furious when Mary listens in on a phone call with his girlfriend, and Meemaw tries to cheer up a jealous Missy. Wallace Shawn guest stars as Dr. John Sturgis.

Season 3, Episode 15 - A Boyfriend's Ex-Wife and a Good Luck Head Rub Airs February 13, 2020 at 8:00/7:00c on CBS Meemaw meets Dale's ex-wife, June (Reba McEntire). Also, Sheldon is forced to work on a group project with reluctant college students. Reba McEntire, Wallace Shawn and Craig T. Nelson guest star.

Season 3, Episode 14 - A Slump, a Cross and Roadside Gravel Airs February 6, 2020 at 8:00/7:00c on CBS Sheldon and Georgie mine for platinum in roadside gravel. Also, Mary is concerned when Missy misuses religion to help with a batting slump. Craig T. Nelson returns as Coach Dale.

Season 3, Episode 13 - Contracts, Rules and a Little Bit of Pig Brains Airs January 30, 2020 at 8:00/7:00c on CBS George Sr. and Georgie go camping with Meemaw's new boyfriend, Dale (Craig T. Nelson), but things get complicated when her ex-boyfriend, Dr. Sturgis (Wallace Shawn), tags along.

Season 3, Episode 12 - Body Glitter and a Mall Safety Kit Airs January 16, 2020 at 8:00/7:00c on CBS Sheldon learns to listen when an emotional Paige (Mckenna Grace) struggles with her parents’ divorce. Also, George Sr. is furious when Georgie tries to buy his way out of chores. Wallace Shawn, Wyatt McClure, Mckenna Grace and Andrea Anders guest star. Lea Thompson (Back to the Future, Caroline in the City) directed this episode.

Season 3, Episode 11 - A Live Chicken, a Fried Chicken and Holy Matrimony Airs January 9, 2020 at 8:00/7:00c on CBS George Sr. and Meemaw struggle to manage the Cooper household while Mary plans Pastor Jeff's wedding. Melissa Peterman guest stars as Brenda Sparks.

Season 3, Episode 10 - Teenager Soup and a Little Ball of Fib Airs December 12, 2019 at 8:00/7:00c on CBS Sheldon fakes being sick to avoid a swim test at school. Also, Dr. Sturgis spies on Meemaw's new boyfriend. Wallace Shawn and Craig T. Nelson guest star.

Season 3, Episode 9 - A Party Invitation, Football Grapes and an Earth Chicken Airs December 5, 2019 at 8:00/7:00c on CBS Mary gets Pastor Jeff involved when Sheldon isn't invited to Billy's birthday party. Also, George Sr. has "male-bonding time" with Dr. Sturgis. Wallace Shawn and Melissa Peterman guest star.

Season 3, Episode 8 - The Sin of Greed and a Chimichanga from Chi-Chi's Airs November 21, 2019 at 8:00/7:00c on CBS The University makes George Sr. a lucrative job offer in the hopes of recruiting Sheldon. Also, Georgie gets a job working for Meemaw's new boyfriend, and Mary is determined to rid her home of greed. Wallace Shawn and Craig T. Nelson guest star.

That's from Season 10, Episode 15 "The Locomotion Reverberation": https://the-big-bang-theory.com/episodeguide/episode/1015/The-Locomotion-Reverberation/